check the speakers either they are not fully hooked up or they are blown, you can also hook up a speaker you know that works and see if you get sound.. no sound to a good speaker thats hooked up would be possible break in the wire.. OR you have the radio fader set to front and dont realize it.. I've seen this happen...

i have an aftermarket head unit and the wiring harness had a chime box. I have everything hooked up except for a single red power wire coming off the chime box. can you tell me where this wire goes? t...